He was walking, whistling joyfully.

The whistling wind in the trees creates a peaceful atmosphere.

The whistling birds are flying in the sky.

The sifflantes are sounds produced by consonants like \u201cch\u201d, \u201csh\u201d, \u201cj\u201d, \u201cs\u201d, and \u201cz\u201d.

Snakes have hissing tongues.

The sibilant consonant is produced by passing air through a narrowing of the oral opening.

She has a whistling voice.